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The cofficient of restitution e for a pe...

The cofficient of restitution e for a perfectly elastic collision is
(a) 1 (b) zero (c) infinite (d) -1

A

0

B

`-1`

C

1

D

`oo`

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The correct Answer is:
C
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The coefficient of restitution e for a perfectly elastic collision is

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Three identical blocks A, B and C are placed on horizontal frictionless surface. The blocks B and C are at rest. But A is approaching towards B with a speed of 10 ms^(-1) The coefficient of restitution for all collision is 0.5. The speed of the block C just after collision is

Statement-1 : The coefficient of restitution is less than one for all collision studied under Newton's laws of restituation. and Statement-2 : For a perfeclty elastic collision, coefficient of restitution is equal to one .

Consider objects of masses m_(1)and m_(2) moving initially along the same straight line with velocities u_(1)and u_(2) respectively. Considering a perfectly elastic collision (with u_(1)gt u_(2)) derive expressions for their velocities after collision.

AAKASH INSTITUTE ENGLISH-WORK, ENERGY AND POWER-Assignment (SECTION - C)
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